package cn.edu.gxu.xingjian.teacherassistant.util;

public class Session {
	private Session(){
	}
	private static Session session;
	private Long uid;
	public static Session getInstance(){
		if(session==null){
			session = new Session();
		}
		return session;
	}
	public Long getUid() {
		return uid;
	}
	public void setUid(Long uid) {
		this.uid = uid;
	}
	
}
